TIME FOR A CHANGE.
For the first time in three decades, nearly 200 countries at the U.N. climate summit in Dubai agreed on a pact explicitly advocating for a shift away from fossil fuels. This landmark decision, reached amid intense negotiations and resistance from oil-rich nations and rapidly developing countries, calls for accelerating the move away from oil, gas, and coal this decade, aiming for net-zero carbon emissions by mid-century. The agreement emphasizes tripling renewable energy sources by 2030 and reducing methane emissions. While not legally binding, it sends a strong signal about the global transition from fossil fuels and requires nations to submit detailed emission reduction plans by 2035. However, the pact faces criticism for potential loopholes and its non-binding nature, raising questions about its effectiveness in limiting global warming to 1.5 degrees Celsius. (New York Times)
CREATIONIST CORE.
Mike Johnson, the newly appointed Speaker of the House as of October 25, 2023, has garnered attention for his controversial positions, including opposing the certification of the 2020 presidential election and his strong anti-abortion and anti-LGBTQ+ views. Comparing himself to Moses, Johnson aligns with white Christian nationalism, a perspective highlighted by his legal support for Ark Encounter, a Young Earth Creationism tourist site in Kentucky. He successfully sued for state tax incentives for Ark Encounter, arguing against religious discrimination. This connection reflects his broader alignment with the Christian Right’s stance against evolutionary science and secular humanism. Johnson’s beliefs, including skepticism towards climate change and the link between evolution and immorality, resonate with a significant segment of American evangelicals, underscoring the political impact of these views. (The Conversation)
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NEJM TACKLES TROUBLING PAST.
The New England Journal of Medicine and Surgery, first published in 1812, had complex ties to slavery and racism, reflecting the broader American societal context of the time. Its founders and contributors, benefitting economically from slavery, often wrote in ways that perpetuated racial hierarchies. The Journal’s content included dehumanizing references to enslaved people and provided a platform for racist medical theories, especially before and after the Civil War. The Journal’s history illustrates the interplay between medical practices and social-political injustices. It often cited the reproductive value and labor of enslaved people and endorsed racist ideologies, like those of J. Marion Sims and Josiah Nott, who saw racial differences as biological and justified. Such perspectives were normalized in medical literature, reinforcing white supremacy. This history invites further exploration and reckoning. It’s crucial to acknowledge the Journal’s role in perpetuating these injustices and the need for ongoing efforts to address the legacies of slavery and racism in medicine. The Journal’s evolution over the years, though slow, reflects changes in societal attitudes towards race and the ongoing struggle against health inequities. (New England Journal of Medicine)
3D PRINTING TISSUE.
Researchers at Duke University and Harvard Medical School have innovated a method for 3D printing inside the human body using ultrasound waves and an injectable, biocompatible ink. This technique, known as “deep-penetrating acoustic volumetric printing” (DVAP), utilizes the sono-thermal effect where soundwaves harden the ink. This method surpasses the limitations of light-based printing, enabling deeper tissue penetration. The “sono-ink” can be injected and solidified in targeted areas using an ultrasound probe, allowing for the creation of complex internal structures. This advancement could potentially enable non-invasive procedures for repairing bones and heart valves. The team has successfully conducted preliminary tests, including heart repair in a goat and bone defect treatment in a chicken leg, and demonstrated controlled drug release in a liver model. Although promising, further research is required to apply this technology in human clinical settings. This novel approach opens new possibilities in medical treatment, reducing the need for invasive surgery. (Futurism)
SPECIAL KIND OF SPACE DUST.
NASA’s OSIRIS-REx mission, which returned to Earth with samples from asteroid Bennu, has successfully retrieved over 70 grams of asteroid material, far exceeding the mission’s success target. This haul includes a unique 3.5-centimeter rock and other fragments with rare chemical compositions, offering valuable insights into the Solar System’s early history. However, the mission faced a setback when two screws in the sample canister couldn’t be opened, blocking access to additional samples. Despite this challenge, the retrieved samples, rich in volatile chemicals and organics, are already providing significant scientific data. They have been preserved from Earth’s atmospheric alterations and include organics potentially linked to the origin of life. NASA is developing specialized screwdrivers to access the remaining material inside the canister, estimated to be between 30 to 70 grams, without contamination. This mission marks a major advancement in space exploration and our understanding of the universe. (Nature)
ANIMALS LOVE OLD HUMAN HAUNTS.
Researchers in Zimbabwe and Botswana have discovered that antelope species, such as impala and greater kudu, prefer grazing on ancient Iron Age settlements, now rich in diverse, nutrient-packed grasses. These 1800-year-old sites, identified through remnants like jewelry and pottery, were once cattle enclosures (kraals) used by nomadic pastoralists. Over centuries, cattle dung accumulated in these kraals, significantly enhancing the soil’s nutrient content, particularly in phosphorus and calcium. This enrichment has led to increased grass biodiversity in these areas, making them attractive grazing spots for antelope. The study, published in the Journal of Arid Environments, reveals the lasting impact of ancient human activities on the environment, challenging the notion that human presence is inherently harmful to ecosystems. These findings also offer contemporary conservation insights, suggesting that strategic cattle grazing could aid in ecosystem restoration. The research adds to the understanding of how historic human practices have shaped and enriched modern landscapes worldwide. (Science)
CATS EAT JUST ABOUT EVERYTHING.
Free-ranging domestic cats, including feral ones, prey on over 2,000 species, as found in a study published in Nature Communications. This diet is surprisingly diverse, including birds, reptiles, mammals, and insects like monarch butterflies. Some larger animals, such as camels and sea turtles, are also consumed, likely through scavenging. This extensive predation has significant ecological implications, particularly as many of the species are endangered or at risk. On islands, where species evolved without mammalian predators, cats’ impact is especially severe. In the U.S., cats are estimated to kill around 2.4 billion birds annually, contributing to the decline in bird populations. Managing the large feral cat population presents a challenge. While trap-neuter-return programs exist, they’re not always effective in reducing numbers. The debate continues over how to balance cat welfare with protecting wildlife. The study involved detailed analysis of academic papers and data from various sources. The findings highlight the need for strategies that mitigate cats’ ecological impact while ensuring their humane treatment. Indoor cats are suggested as a wildlife-friendly alternative for pest control, avoiding the ecological risks of outdoor roaming. (New York Times)
ELECTRIC EELS HAVE SPECIAL POWERS.
Electric eels may cause natural electroporation, a process used in labs to introduce substances into cells, suggests a study in PeerJ—Life and Environment. Typically, electroporation involves using electricity to create temporary pores in cell membranes for DNA entry, aiding in genetic modifications. Researchers in Japan hypothesized that electric eels’ shocks could transfer genetic material into nearby organisms. In an experiment, zebrafish larvae exposed to electric eel discharges absorbed DNA from the water, making some glow green, indicating gene transfer. This finding, although limited to lab conditions, suggests electric eels might contribute to genetic changes in wild species, potentially affecting their evolution. Future research may explore effects on smaller organisms. The potential for these modified genes to be passed to offspring remains uncertain, but it raises the possibility of electric eels influencing species development and diversity. (Smithsonian)
Thanks for reading. Let’s be careful out there.
WORDS: The Biology Guy.
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